Drier.



DRIER.

xPPucATloN FILED JUNE 3o, 191s.

www

Patented Feb. 11, 19m.

R. W. KiNG.

Umea.

APPLICATION FILED IUNE 30, 19H5.

Patented Feb. 11, 1919.

1293799" Y* 2 SHEETS-SHEET 2.

I nette's Patent.

Patti-filtert lFelo. lli.,

pplieaten led June SO, 1916. Serial No. 108.8%.

.To all 'LU/0m it may concern.'

Be it known that i, Hanru YV. ixo, a

eitizen ot' the United States, residing' at The Dalles, in 'the county oi li/vasco and @tate of @3i-egon, have invented new and useful `iinprovenienti; in Driers, ot which the following is a specification.

his invention relates to driers and Coniin Certain improvements in the oo ntrnetion thereof as will be herein after fully (les bed and pointed out in the elainis.

More particularly the invention adaptetl ier drying vegetables and fruit products and as shown it is so adapted.

The. invention is illustrated in trie accom-- pe ming; dravvyne/s as tollows2- iggure Il -tiowi-s .a Cross section oi' the 133 a section on the line -2 in Figi. l. 3 a View of they side et the supplemental air ehambe i. L a perspective view of the yalfes for controllingh the air to the outlet chamber llif :5 :i vpian View elE i Fil, .b section ot' a tray shown therein.

The drying chamber which is ordinarily as shovxnin the forni o'lt ay tunnel is termed with the side walls top wall 3, bottoni wall l and. end vwalls A track (l extends troni end to end et' the tunnel and ears Y are arranged on these trat-lis. fr Closure 8 is arranged along.; the inlet side el the ear so as to drive the air through the contents earried by the Car. A tray rack il is torined on the far. This may be of any desirable. Construction. fis shown is niade up of the posts 9 and angle irons l) ilorniingi' supports if r the trays il. rThe trays are ifi i with the les and the perforated bottoni 13 preferably ot' wire mesh. The ears areinoved into and out o'tl the tunnel by way of the doors 14 and l5. vertical heating eoil 16 is provided l'or heating;` the air. .lt is ar 'tinged between the verti :ai partitions 1T and 18. An. air passage if) is formed between the partition 17 and the wall 2. rThere is an opening between the partition or wall l? and the bottom wall -l l se tha 1 air passes down through the passage,

19, through.L passage :2O and upwardly alone" the vert-ical coil between the partitions LC; ane 18 and out through a passage 21 formed bet veen the top wall 3 and the top ot' the partition. 18, An inclined Well 22 extends o a tree'inent. ot' a tray rael with a- 'lfron'i the wall 1S at, its top and the. Closure board or partition 8 at the bottoni, thus 'lornling with relation to the stack ot trays an air passage larger aty the top than at the bottoni for carrying;l the air downwardly along),l the iaee ot the tra s.

Rin air rhaniber 223 is arranged at the outlet side otI the chamber alonyA the wall l, the wall l i'orn1in; on@ wall ot' the chamber :23; The inner wall .34 ot' this chamber is inclined being` more distant troni the trays at the top than at the bottoni and it is proA vided. with a series otI slots 25, which extend horizontally across the ('haniber. These slots are controlled by 'the valves 2o, these valves beingA in the 'lorni ol plates carried by rods The rods extend through the end walls and are provided with rorliingi loyers 25). Series et' holes il() are arranged in the end walls and pins li are adapted to be inserted in these holes 30 't'or loeltinggl the lever 2E) in any position to which it may be adjusted and thas lorliing the valves in any position that they may be adjusted. ily adjustingthe. various valves 26 a uniiorni tiow olf air inay be indiu'ed tln'olrghoutl the air tunnel and a slight inclination may be given to this air tor the purpose hereinat'ter described.

rl`he r-hainber 2") opens Vthrough the slot 9 "l into a supplemental chamber or collector 32 arranged at the lower rorner of the main 'chamber and this is connected by the slot Ill with the passages or tubes 35 and the tubes l5 lead to an exhaust pipe flo, the exhaust pipe leading to an exhaust tan,` not shown. The `slot. illis tapered being;` larger at the ends than the center so as to neutralize the greater eti'evt of the ian at its immediate connection than at they end. n this way the current, may be tempered so as to gire uniformity. Detieetor plates 27 inay be arranged along the. t'aee ol" the wall 24. These assist in giving to the air the proper direi'- tioninagY through 'the rhaiuber.

lt is desirable lo pass the air through the bottoms ot the trays because in this way the air is ni'ade to Contact a greater part of the surface of the material. It is desrable to have the air pass through the bottoni ot' one tray because it the air is given a greater inclination to the 't 'ays than suoli as will effect a passage thronfth a single tray, that part ot' tray rie-rest the incoming air will be subjected en ely to the fresh ornon-moisture laden air while that part of the-tray near the' outlet would, if the air eX- tended through more than one tray, be sub jected to the moisture-laden air incident to the passa e of the air through the first tray. The resut would be a great lack of uni formity in the product and a lack of. eiliciency in the drier as a whole.

' vllVith my invention I give to the air just suiicient inclination so that' the main volume ofv air which passes through the tray bottoms passes t rough but one tray bottom and consequently there is a uniform drying throughout the length of the tray. I prefer to introduce the air from a side and at the to of the tray stack because it is.

more easi y controlled when given a downward deflection than an upward deflection and I prefer to give the air an inclination to pass throu h thetray bottom from the to downward y.

hat I claim as new is 1. In a drier, thecombination of a chamber; means for stacking trays in spaced and open relation onev above another therein;

trayspin said means having perforated bottomsffon which the material to be dried is supported;x and apparatus for passing a i current of air ast said trays and directing supported; and apparatus for passing a cur-4 rent of air past said trays and directing said air at a slight inclination downward to the tray bottom to produce currents through the tray bottoms with the main l.volume passing through the bottoms limited to a passage of the same air through but one bottom downwardly.

3. In a drier, the combinationof a chamf ber: means for stacking trays in spaced reopenings; and means for drawing a1r lation one above another therein; trays in pelling the passage of a current of air throulgh the chamber and heating unit.

n a drier, the combination of'a chamber; means for stacking trays in spaced re. lation one above another therein; an exhaust chamber facing said means, said exhaust chamber presenting an inclined wall to said means more distant from the means at thev top than the bottom and having a series of openingstherein; and means or drawing air from said air chamber.

5. In a drier, the combination of a chamber; means for stacking trays in spaced relation one above another therein; an exhaust chamber facing said means, sald exhaust chamber presenting an inclined wall'to said means more distant from the means at the top'than the bottom and having a series of openings therein; 'valves controlling said from said air chamber. 6. In a drier, the combination of a drying chamber; means for stacking trays in space relation one above another therein; an exhaust chamber facing said means and having a series of openings therein; valves for controlling said o enings; a supplemental chamber leading rom said air chamber; and means for exhausting airfrom the supplemental chamber. f!

7. In' av drier, the combination of a drying chamber; means for stackin trays in spaced relation one 'above another t ere1n;trays arranged in said stack, said trays having perforated bottnms; a vertical heater; a passage from the heater to the top 'of the drying.

chamber adjacent to the means; an outlet chamber at the opposite side of the drying chamber having a series of valve openings therein; and means for exhausting air from the air chamber.

In testimony whereof I have hereunto set m hand.

.y RALPH W. KING. 

